Typewriting machine



J. A. B.-SIVHTH. TY-PEWRIT|NG MACHINE.

APPLICATION FILED FEB 2 1920 Patented June 13, 1922'.

2 SHEETSSHEET l.

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J. A. B. SMITH. TYPEWRITING MACHINE.

APPLICATION FILED FEB.2. 1920.

Patented Jim 13, 1922.

2 SHEETS-SHEET 2.

STAES PATEN oFFrcE.

JESSE A. B. SMITH, E STAMFORD, CONNECTICUT, ASSIGNOR TO UNDERWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y-, A CORPORATION OF DELAWARE.

TYPEWRITIN G MACHINE.

Specification of Letters Patent.

Application filed February 2, 1920. Serial No. 355,591.

To all whom it may concern:

Be it known that I, JEssE A. B. SMITH, a

citizen of the United States, residing in Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in i'ypewriting Machines, of which the following is a specification.

This invention relates to typewriting machines, and is herein disclosed as applied to an Underwood standard typewriting machine of the general sort shown in the patent to IVernery & Smith, No. 1,132,055, dated March 16, 1915, in which the platen is adapted to be lifted in the carriage to permit work-webs to be drawn substantially straight forward beneath it to enable them to be gaged.

In such machines, as in other typewrit ing machines, one of the urgent problems has been that of securing registration of superposed work-webs, especially wlien such webs have forms printed upon them which are to be filled out in the course of the typewriting. Part of the difficulty in aligning work-webs arises from the fact that superposed work-sheets creep, in passing around the platen. the outer upon the inner, and this creeping is cumulative in the case of work-sheets which are in the form of continuous webs.

According to the present invention, gaging or aligning of superposed work-webs may be effected by follower pins or similar devices, preferably tapering, adapted to enter perforations similarly placed in the forms on the superposed webs on which they normally rest, with the result that when the pins or devices are fully entered into the perforations, the superposed webs are realigned or brought into registration and are also gaged by the pins or devices. It

will be seen that the pins act as feelers of the pins to work-forms of different lengths or to differently locate perforations, the bar carrying the pin or pins may be shiftable with the stop which is usually included in such machines and serves to limit the rearward motion of the carbonpaper-carrlage. The connections may be such that the pin or pins normally bear upon the surface of the web, but not with suflicient friction to prevent the advance of the web by the line-spacing mechanism if des red. The connections may include a spring which drives the pin or pins through the perforations when the perforations reach the pin or pins. The pin or pins will be supported when in contact with an imperforate portion of the work-sheet, but Wlll pass through a web or webs when an openlng or openings register therewith. To release the webs from the pins, the carbonpaper-carriage may be provided with a camor device which is adapted to lift the pins clear of the webs, thus permitting the webs to be drawn forward so that the perforations are clear of the path of the pins.

When the device is used in this manner, the usual leading-edge gage for the webs may be omitted, and when the platen is drawn upward to permit the webs to be drawn forward, the typist may pull thewebs forward slowly in the usual manner until they are arrested by the entering of the pin into the perforations, thus gaging them. The pushing of the carbon-papercarriage rearwardly may release the webs from the pin at this time, and thus permit the work to be further drawn upon if desired.- Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure .1 is a diagrammaticsectional side view of a machine of the kind referred to,-

showing apin riding upon the surface of the web.

Figure 2 is a similar view, showing the platen swung up and the webs drawn forward until gaged by the pins entering the perforations.

Figure 3 is a view similar to Figure 2, but showing the carbon-paper-carriage pushed rearwardly to lift the pins and release the webs.

Figure 4; is a fragmentary perspective view of the pins, their mountmg, and some adjacent parts.

In the Underwood standard typewriting machine of the general kind shown in said patent to VVernery & Smith, a plurality of webs or sheets 10, 11 and 12 are drawn from the rear over a back rod 13, forming part of Patented June 13, 1922.

an extension 14 of the typewriter carriage 15, and are carried forwardly under the platen 16 past the feed-rolls 17 and 18, so that types 19 upon type-bars 20 may print upon the webs through a ribbon 21. The types19 print not only upon the outside Web 12, but also upon the inside webs 10 and 11, because sheets of carbon paper 22 and 23, fast to the usual clip bars 24 and 25 of the carbon-paper-carriage 26, extend forwardly around the platen and up past the printing point at the ribbon 21.

When a work-form upon the webs l0, l1 and 12 has been typed in the usual manner, the platen is released by swinging rearwardly the hook 27 which normally overlies a pin 28 upon the swing frame 29 in which the platen is mounted, thus permitting the platen to be swung upwardly to the Figure 2 position, by lifting the frame 29 to swing it around its pivot 30 at the front of the car riage 15. W hen the platen 16 is in the Figure 2 or Figure 3 position, the webs 10, 11 and 12 may be seized by the typist at their forward ends and drawn forward until arrested by a follower pin or pins 31, which are herein shown as mounted upon a crossbar or bail 32 forming a pin frame having forwardly-extending arms 33 pivoted at 34.- on a stop 35, which, in some respects, resembles the usual stop for the carbon-papercarriage in such machines. The'pin 31 arrests the webs 10, 11 and 12, because it is provided with a tapered end 36, having a flat or rounded tip 37 which rides upon the web, but which,-when a perforation 38 in anyof the webs comes adjacent the pin, eu-

ters therein because the pin is pressed against the web by a spring 39 secured to the stop 35. v

To enable the pin or pins 31 to be effective in this manner, the stop 35 comprises a cross-bar 4C0 connecting the slides 41, which ride upon the rails 12 upon which the carbon-paper-carriage 26 travels. The pins 31 are enabled to align the webs 10, 11 and 12 in the manner described, because the crossbar 40 is provided with sockets or openings 43, into which the pins 31 are adapted to enter in passing through the perforations, while the webs are supported upon the crossbar 410. This enables the tapering sides 36 of the pins to align the webs before the cross-bar 32 comes down flat upon the crossbar 40. The arms 33 advantageously have their pivots 3 1 considerably to the rear of the pins 31, thus giving the pins a comparatively flat arc of swing.

\Vhen the work-webs have been drawn forward until arrested, as at the Figure 2 position, the typist pushes rearwardly the carbon-paper-carriage 26 by its usual forwardly-extending handle or finger-piece 44 to the Figure 3 position, meantime grasping the ends of the webs 10, 11 and 12 against the usual upper extension 45 of the front paper-table 46. This holds the webs firmly in position while the pins 31 are lifted clear of the work-webs 10, 11 and 12 by the striking of a cam 47 against a lever arm forming a forward cam extension 48 of one of the arms 33, at one side of the carriage extension 1a. If at any time found desirable, the lever arm -18 may be employed as a fingerpiece or handle for manually lifting the pins 31 to release the webs therefrom. The cam 47 is mounted upon one side of the carbon-paper-c2irriage 26, and may be ,held thereto by screws 17. In this=Figure 3 position, the cam -17 has lifted the pins 31 clear of the webs .10, 11 and 12, with the result that when the platen 16 is swung back to the Figure 1 position, the bending of the webs downwardly over the rear papertable 49 and beneath the platen creates a bend in them, thus dragging the carbonpaper-carriage 26 forward because of the friction of the carbon sheets upon the web. This releases the pins 31; the length of the cams 17 and 18 is, however, so adjusted that the moving of the carbon-paper-carriage forward by this returning of the platen does not release the pins until the perforations 38 beneath the pins have been drawn forward clear of the pins, with the result that the pins ride upon the surface of the outer web, as shown in Figure 1. The typist then usually detaches the section of web which has been already written upon, by drawing it against the usual knife 50, and then advances (or returns) the webs to the proper typing position, which may be the Figure 1 position. To enable the stop to be adjusted to suit the work in hand,

it is provided with a clamp 51 adapted to seize the adjacent rail -12.

To keep the webs in edgewi se alignment, the rear rod 13 may include the usual adjustable side gages 52, and the carbon-paper: carriage may also include the usual side gages, not shown. If desired, there may be provided a separate cam extension 48for each end of the bar 32, as shown in Figure 4. In order to enable the cams 47- and 18 to co-operate properly in holding the pins 31 clear of the webs while the platen is being returned, the cam 47 may include a considerable dwell 53. The spring 39 is advantageously a flat spring overlying one arm 33. thus minimizing the liability of its being entangled with the webs 10, 11 and 12.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, the combination with a travelingcarriage and a revoluble platen therein, of a device past which work-sheets are drawn in passing around the platen, a pin forming'part of said device, and a spring adapted to press said pin upon the surface of the work-sheets and to cause it to enter perforations in superposed work-sheets to align them by bringing the perforations to register.

2. In a-typewriting machine, the combination with a traveling carriage, of a revoluble platen therein, a swing frame in which the platen is mounted to enable the platen to be lifted upward, to enable work- 'webs to bedrawn forward substantially straight beneath it, a rear extension of the carriage over which the webs are so drawn, a pin upon said extension, and means for pressing upon said pin to cause it to enter perforations in superposed work-webs to align them by bringing their perforations to register.

3. In a typewriting machine, the combination with a traveling carriage, of a revoluble platen therein, a swing frame in which the platen is mounted to enable the platen to be lifted upward, to enable workwebs to be drawn forward substantially straight beneath it, a rear extension of the carriage over which the webs are so drawn, a pin adjustably mounted upon the extension, and a spring normally causing the pin to bear upon the surface ,of a web, and adapted. to cause it to enter perforations in superposed webs to align them by bringing their perforations to register.

4. In a typewriting machine, the combination with a traveling carriage, of a revoluble platen therein, a swing frame in which the platen ismounted to enable the platen to be lifted upward, to enable workwebs to be drawn forward substantially straight beneath it, a rear extension of the carriage over which the webs are so drawn, a pin mounted to swing upon said extension, a spring normally swinging the pin against a web drawn over the extension, and adapted to cause it to enter perforations in superposed webs to bring their perforations into register to align the webs, and connections including a finger piece or handle extending toward the front of the carriage to move the pin clear of the webs.

5. In a typewriting machine, the combination with a traveling carriage, of a revoluble platen therein, a swing frame in which the platen is mounted to enable the platen to be lifted upward, to enable workwebs to be drawn forward substantially straight beneath it, a rear extension of the carriage. a carbon-paper-carriage slidable on said extension. a stop for the carbon-papercarriage adapted to limit its rearward movement, pins mounted to swing upon the extension and normally bearing upon the surface of a web drawn over the extension. and adapted to enter perforations in superposed webs to bring them to register. and means made effective by movement of the carbonpaper-carriage for moving the pins clear of the webs.

6. In a typewriting machine, the combination with a traveling carriage, of a revoluble platen therein, a swing frame in which the platen is mounted to enable the platen to be lifted upward, to enable workwebs to be drawn forward substantially straight beneath it, a rear extension of the carriage, a carbon-paper-carriage slidable on said extension, an adjustable stop for limiting the rearward movement of the carbonpaper-carriage, a frame comprising pins adapted to swing upon the stop, a spring normally holding the pins against the surface of a web, and adapted to cause the pins to enter perforations in superposed webs to bring them to register, a cam arm connected to said pin frame, and a cam on the carbonpaper-carriage adapted to operate said cam arm to lift the pins clear of the webs.

'7. In a typewriting machine, the combi nation with a traveling carriage, and a revoluble platen therein, of feed rolls adapted to bear upon webs passed around the platen, means for eflecting separation between the platen and feed rolls, a swinging member behind the platen, and a pin on said member adapted to be carried into perforations on superposed webs to align them when the platen and rolls are separated, and adapted to be held clear of the webs.

8. In a typewriting machine, the combination with a traveling carriage, and a revoluble platen therein, of feed rolls adapted to bear upon webs passed around the platen. means for effecting separation between the platen and feed rolls, a paper-table behind the platen, a swinging member behind the paper-table, pins on said member adapted to be carried into perforations on superposed webs to align them, and a manuallyoperated cam adapted to hold the pins clear of the webs.

'9. In a typewriting machine, the combination with a traveling carriage, of a revoluble platen therein, a swing frame in which the platen is mounted to enable the platen to be lifted upward, to enable workwebs to be drawn forward substantially straight beneath it. a rear extension of the carriage over which the webs are so drawn. and spring-pressed pins upon the extension normally bearing upon a web and adapted to enter perforations in superposed webs to gage the webs and to align them.

10. In a typewriting machine. the combination with a traveling carriage. ofa revoluble platen therein, a swing frame in which the platen is mounted to enable the platen to be lifted upward, to enable workwebs to be drawn forward substantially straight beneath it. a rear extension of the carriage over which the webs are so drawn. a knife adjacent the printing line upon the platen, and pins upon the extension adapted to enter perforations in superposed webs to gage them for the knife and align them.

11. In a typewriting machine, the combination, with a traveling carriage, .of a' revoluble platen therein, a swing frame in which the platen is mounted to enable the platen to be lifted upward, to enable workwebs to be drawn forward substantially straight beneath it, a rear extension of the carriage over which the webs are so drawn, a knife adjacent the printing line upon the platen, pins upon the extension adapted to enter perforations in superposed webs to gage them for the knife and align them, resilient means normally holding the pins upon the Webs, and a manually-operable device adapted to raise the pins clear of the webs.

12. In a typewriting machine, the combination with a traveling carriage, of a revoluble platen therein, a' swing frame in which the platen is mounted to enable the platen to be lifted upward, to enable workwebs to be drawn forward substantially straight beneath it, a rear extension of the carriage over which the webs are so drawn. a knife adjacent the printing line upon the platen, a carbon-paper-carriage running upon the extension and adapted to have carbon sheets clipped to it, a rear stop for'the carbon-paper-carriage adapted to arrest it with the carbon sheets clear of the knife, a pin frame swingable upon the stop and comprising pins adapted to enter perforatlons in superposed webs to align them. a spring normally tending to make the pin frame effective, and a cam upon the carbon-papercarriage adapted to set it to ineffective position at the rearmost position of the carbonpaper-carriage. 1 I

13. In a t pewriting machine, the combination with a traveling carriage, of a revoluble platen therein, a swing frame in which the platen is mounted to enable the platen to be lifted upward, to enable. workwebs to be drawn forward substantially straight beneath it, a rear extension of the carriage over which the webs are so drawn, a pin upon said extension, means for pressing upon said pin to cause it to enter perforations in superposed work webs to align them by bringing their perforations to register, and a manually-operated cam adapted to make the pin ineffective, the connections being such that when the platen is dropped the webs are advanced, the cam becomes ineffective and the pin rides upon the surface of the outer web.

14. In a typewritin'g machine, the combination with a traveling carriage, of a revoluble platen therein, a swing frame in which the platen is mounted to enable the platen to be lifted upward, to enable work webs to be drawn forward substantially straight beneath it. a rear extension of the carriage over which the Webs are so drawn,

a pin upon said extension, means for pressing. upon said pin to cause it to enter perforations in superposed work webs to align them by bringing their perforations to register, a carbon-paper-carriage riding upon the extension, a rear stop for said carbonpaper-carriage, a swinging arm on said stop carrying said pin, a cam extension of said arm at one side of the carriage extension, and a cam on the carbon-paper-earriage adapted to operate the cam extension to make the pin ineffective,

15. In a typewriting machine, the combination with a traveling carriage comprising a platen, of an extension of said carriage behind the platen, a bar pivoted to swing on said extension, a co-opera-ting bar, and a plurality of tapered pins on said pivoted bar adapted to pass through perforations in a plurality of work-webs and enter sockets in the co-operating bar to align the webs.

16. In a typewriting machine, the combination with a'traveling carriage comprising a platen, of an extension of said carriage behind the platen, a bar pivoted to swing on said extension, a co-operating bar, a plurality of tapered pins on said pivoted bar adapted to pass through perforations in a plurality of work-webs and enter sockets in the co-operating barto align the webs, a device normally pressing the pins toward effective position during writing, and means for releasing the webs to enable a fresh length to be brought to the platen.

17. In a typewriting machine, the combination with a platen, of work-sheet-positioning ineans comprising a work-sheet support having an opening therein. afollower to.

rest on a work-sheet on said support, the follower engaging a portion of the work sheet extending across said opening, and means including a spring to urge the follower against the work-sheet, the spring being so feeble that it may be overcome by a portion of the work-sheet extending across the opening, whereby, upon movement of the work-sheet to bring an opening therein opposite the follower, the latter will pass through said opening and hold the worksheet against further movement.

18. A sheet-positioning device for a typewriting machine having a platen, said device comprising members, one having a projection thereon and the other having an opening therein to receive said projection,

and a spring to urge saidinembers toward side of the work-sheet, therebyiholding the latter against movement.

19. A sheet-positioning device fora typ writing machine having a platen, said device comprising a I stantially para lelwith the," laten' and rela,- tivelyYspring-pressed'towar each other and air of bars extending subtoward a work-sheet which'm'ay be drawn between said bars, a socket being provided in one of said bars, and a pin carried by theother said bar to enter said socket, the

work-sheet having a-perforation therein positioned to register with said socket asthe work-sheet is drawn along so that said p n will ride on the work-sheet and will enter the perforation therein to bring the worksheet to a stop at the desired position.

20. A sheet-positioning device for a typewriting machine having aplaten, said device comprising a pair of bars extending substantially parallel with the platen an relatively 's ring-pressed toward each other and towar a work-sheet which may be drawn between said bars, a socket being provided in one'of said bars, a pin carried by the other said barto enter said socket, the

work-sheet having a perforation therein-positioned to register with said socket as the work-sheet is drawn along so that said pin will ride on the work-sheet and will enter the perforationtherein to bring the worksheet to a stop at the desired position, and 

